Shaft-upsetting hammer.



No. 672,552. Patented Apr. 23, I901. J. P. HARRINGTON.

SHAFT UPSETTING HAMMER.

(Application filed Dec. 21. 1900.)

2 Shaets- Sheet 1.

(No Model.)

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#11 1|] IllllllL vNo. 672,552. Patented Apr. 23, I901.

J. P. HARRINGTON.

SHAFT UPSETTING HAMMER.

(Application filed Dec. 21, 1900) {No Model.) 2 Sheets- Sheet 2 UNI EDSTATES JOHN P. HARRINGTON, OF PHILADELPHIA, PENNSYLVANIA.

SHAFT-U PS ETTING HAM M ER.

SPEGIFICATION forming part of Letters Patent No. 672,552, dated April23, 1901.

Application filed December 21,1900. Serial No. 40.626. kNornodei.)

To all whom it may concern:

Be it known that I, JOHN P. HARRINGTON, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inShaft-Upsetting Hammers; and Ido hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers'skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, forming part of this specification.

My invention relates to improvements in shaft-upsetting hammers whichare designed to operate upon the ends of shafts, so as to upset them andform collars thereon, as in forging shafts it is frequently necessary todo. To accomplish this end, I construct a horizontally-operating hammer,preferably operated by steam, which I attach to an anvil provided with asemicircular recess in the top thereof and in line with the travel ofthe hammer, so that the hammer-die will operate on the end of a shaftplaced in said recess. I

further provide this semicircular recess in the sized shafts.

anvil with semicircular bushings, which maybe inserted therein to adaptit to different- The anvil of this machine may be made stationary, ifdesired; but I prefer a construction in which the hammer and anvil areso constructed and mounted upon wheels that it can be moved to any pointwhere a shaft is being forged and operated to upset the end of suchshaft expeditiously when desired.

The construction and operation of my invention are hereinafter set forthand described, and illustrated in the accompanying drawings, in whichFigurel is a top or plan view of a shaft-upsetting hammer embodying myinvention. Fig. 2 is a side view in elevation of the same. Fig. 3 is arear end View in elevation of the same. Fig. 4 is a rear end elevationof one of the anvil-bushings used in my invention. Fig. 5 is a side viewin elevation of the same.

In the drawings thus illustrating my invention, A is a hammer-cylinderprovided with the usual piston secured to apiston-rod B and alsoprovided with valve mechanism 0 and an operating-leverD, allof which areof the'usual construction.

The cylinder A is secured to the rear end of a horizontal bed E, whichis provided with guides e e, in which a hammer F, secured to thepiston-rod B by means of a key b, operates, so that when the machine isoperated the hammer F travels horizontally forward and back in theguides e e, and on the forward end of the hammer F there is a removabledie f, which operates as the striking-surface of the hammer F.

To the forward end of the bed E, I secure the anvil G by means of boltsg. The anvil is provided in its upper surface with a semicirculardepression H, adapted to receive the largest-sized shaft to be upset onthe machine, as illustrated by dotted lines in Fig. 2, or to receive abushing I, Figs. 4 and 5, as illustrated in dotted linesin Fig. 3,sothat asmaller shaft can be upset, the bushings I being made of differentthicknesses and with flanges I on the end thereof, which rest againstthe face h of the anvil, so as to receive shafts of different sizes tobe upset.

In operation the ham mer-die f contacts with the end of the shaft beingupset from the center downward, and the enlarged end of the shaft,(shown in dotted lines,) from which the collar is to be formed, contactswith the vertical face h of the anvil G around the semicirculardepression H, in which the shaft lies, and as the blows of the hammerare all struck below the center of the shaft the blow of the hammer isin direct line with the vertical face It on the anvil G, and theenlarged portion of the end of the shaft contacting therewith preventslongitudinal movement of the shaft. The object of thus striking the endof the shaft below the center thereof is that the enlargement on the endof the shaft in contact with the shoulder h of the anvil G sustains theimpact of the hammer-blow and as the shaft is turned in the anviloperates to square up the inner surface of the collar being formed onthe shaft and also operates during the formation of the collar to bringall parts of the collar at right angles with the shaft and the two sidesthereof parallel to each other, and as the shaft is turned in thedepression H in the anvil G or in the bushings I the hammer-die foperates on the entire end of the shaft, gradually upsetting it until acollar is formed thereon as desired.

This machine is preferably mounted upon .flanged wheels J J, which restupon a track K, so that the machine can be moved along the track to anypoint where a shaft is being forged and moved away again when desired,steam connection being made with the valveinlet a by means of asteam-hose. (Not shown.) A further advantage of this arrangement is thatthe machine and shaft both being supported upon wheels during theoperation of the hammer prevents undue shocks upon the parts of themechanism from the blows of the hammer.

I have thus shown and described a shaftupsetting hammer mechanismembodying my invention, which will enable others to utilize myinvention; but I do not desire to confine myself to the exactconstruction and arrangement of parts shown, as they can be considerablymodified without departing from the spirit of my invention.

Therefore what I claim as new, and desire to secure by Letters Patent ofthe United States, is

1. The combination in a shaftupsetting hammer,of a horizontal bed,horizontal guides on said bed, a cylinder secured to one end of saidbed, a hammer connected with the piston-rod of said cylinder andtraveling in the guides on said bed, an anvil having a semicirculardepression in the top thereof secured to said bed so that the lower halfof the depression in the anvil is in line with the travel of the hammer,substantially as and for the purpose set forth.

2. The combination in a shaft-upsetting hammer, of a cylinder secured toone end of a horizontal bed, guides on said bed, a hammer operatinghorizontally in said guides, and actuated by a piston in said cylinder,an anvil having a semicircular depression therein secured to theopposite end of said bed, a die on the face of the hammer adapted tostrike'the end of a shaft placed in the anvil below the center thereof,and bushings adapt ed to be placed in said semicircular depression inthe anvil, substantially as and for the purpose set forth.

3. The combination in a shaft-upsetting hammer of a horizontalbed-frame, a cylinder and a hammer operated in horizontal guidesthereby, an anvil having a semicircular depression in the upper partthereof the lower half of which is in line with the traverse of thehammer, semicircular bushings having collars thereon adapted to fit thesemicircular depression in the anvil, and wheels under the bed-frame andanvil, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

JOHN P. HARRINGTON.

Witnesses:

E. S. ROGKAFELLAR, JOHN S. BILLING.

